DocumentCode
3752322
Title
A high-power multi transistor-inverter uninterruptable power supply system
Author
Joachim Holtz;Wolfgang Lotzkat;Karl-Heinz Werner
Author_Institution
University of Wuppertal, Postfach 100 127, West Germany
fYear
1986
fDate
6/1/1986 12:00:00 AM
Firstpage
311
Lastpage
320
Abstract
The active and reactive load distribution between n paralleled single-phase UPS inverters is equalized by virtue of n − 1 load sharing control loops. The approach permits the construction of UPS systems of any desired power rating at maximum utilization of the power components. The method of harmonic cancellation decreases the switching frequency of the power devices while maintaining good dynamic performance. The design details of a 45 kVA UPS inverter system with 150 % steady-state overload capability are presented. The performance at various operating conditions is illustrated by oscillograms.
Keywords
"Switches","Inverters","Uninterruptible power systems","Pulse width modulation","Magnetic circuits","Surges"
Publisher
ieee
Conference_Titel
Power Electronics Specialists Conference, 1986 17th Annual IEEE
ISSN
0275-9306
Print_ISBN
978-9-9963-2327-0
Type
conf
DOI
10.1109/PESC.1986.7415576
Filename
7415576
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